网络应用
axios的基本使用
功能强大的网络请求库
首先导入： <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
axios.get(地址?key=value&key2=values).then(function(response){},function(err){})
axios.post(地址,{key:value,key2:value2}).then(function(response){},function(err){})
//then方法中的回调函数会在请求成功或失败时触发
//通过回调函数的形参可以获取响应内容,或错误信息
基本使用
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>axios基本使用</title>
</head>
<body>
<input type="button" value="get请求" class="get">
<input type="button" value="post请求" class="post">
<!-- 官网提供的 axios 在线地址 -->
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script>
/*
接口1:随机笑话
请求地址:https://autumnfish.cn/api/joke/list
请求方法:get
请求参数:num(笑话条数,数字)
响应内容:随机笑话
*/
document.querySelector(".get").onclick = function () {
axios.get("https://autumnfish.cn/api/joke/list?num=6")
// axios.get("https://autumnfish.cn/api/joke/list1234?num=6")
.then(function (response) {
console.log(response);
},function(err){
console.log(err);
})
}
/*
接口2:用户注册
请求地址:https://autumnfish.cn/api/user/reg
请求方法:post
请求参数:username(用户名,字符串)
响应内容:注册成功或失败
*/
document.querySelector(".post").onclick = function () {
axios.post("https://autumnfish.cn/api/user/reg",{username:"盐焗西兰花"})
.then(function(response){
console.log(response);
console.log(this.skill);
},function (err) {
console.log(err);
})
}
</script>
</body>
</html>
axios+vue
axios回调函数中的this已经改变,无法访问到data中数据
把this保存起来,回调函数中直接使用保存的this即可
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>axios+vue</title>
</head>
<body>
<div id="app">
<input type="button" value="获取笑话" @click="getJoke">
<p> {{ joke }}</p>
</div>
<!-- 官网提供的 axios 在线地址 -->
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<!-- 开发环境版本，包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
/*
接口:随机获取一条笑话
请求地址:https://autumnfish.cn/api/joke
请求方法:get
请求参数:无
响应内容:随机笑话
*/
var app = new Vue({
el:"#app",
data:{
joke:"很好笑的笑话"
},
methods: {
getJoke:function(){
var that = this;
axios.get("https://autumnfish.cn/api/joke").then(function(response){
console.log(response.data);
that.joke = response.data;
},function (err) { })
}
},
})
</script>
</body>
</html>
案例：查询天气应用
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>天知道</title>
<link rel="stylesheet" href="css/reset.css" />
<link rel="stylesheet" href="css/index.css" />
</head>
<body>
<div class="wrap" id="app">
<div class="search_form">
<div class="logo"><img src="img/logo.png" alt="logo" /></div>
<div class="form_group">
<input type="text" class="input_txt" placeholder="请输入查询的天气" v-model="city" @keyup.enter="queryWeather" />
<button class="input_sub" @click="queryWeather">
搜 索
</button>
</div>
<div class="hotkey">
<!-- <a href="javascript:;" @click="clickSearch('北京')">北京</a>
<a href="javascript:;" @click="clickSearch('上海')">上海</a>
<a href="javascript:;" @click="clickSearch('广州')">广州</a>
<a href="javascript:;" @click="clickSearch('深圳')">深圳</a> -->
<a href="javascript:;" v-for="city in hotCitys" @click="clickSearch(city)">{{ city }}</a>
</div>
</div>
<ul class="weather_list">
<li v-for="(item,index) in forecastList" :key="item.date" :style="{transitionDelay:index*100+'ms'}">
<div class="info_type">
<span class="iconfont">{{ item.type }}</span>
</div>
<div class="info_temp">
<b>{{ item.low}}</b>
~
<b>{{ item.high}}</b>
</div>
<div class="info_date">
<span>{{ item.date }}</span>
</div>
</li>
</ul>
</div>
<!-- 开发环境版本，包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<!-- 官网提供的 axios 在线地址 -->
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script>
new Vue({
el: "#app",
data: {
city: "武汉",
forecastList: [],
hotCitys: ["北京", "上海", "广州", "深圳"]
},
methods: {
queryWeather() {
this.forecastList = [];
axios
.get(`http://wthrcdn.etouch.cn/weather_mini?city=${this.city}`)
.then(res => {
console.log(res);
this.forecastList = res.data.data.forecast;
})
.catch(err => {
console.log(err);
})
.finally(() => { });
},
clickSearch(city) {
this.city = city;
this.queryWeather();
}
}
});
</script>
</body>
</html>
